Employees of Bond Bakery, represented by the Bakers Union, are on strike for higher wages. A representative of the Union approaches the manager of ACME Supermarket and requests he cease stocking Bond Bread. The representative informs the manager that if he does not comply, the Union will distribute handbills in front of the ACME to ACME customers. He shows the manager a sample of the handbill which reads "ACME sells Bond Bread. Bond Employees on strike, Do not patronize ACME Supermarket." The manager does not comply. The unions responds by distributing handbills only at customer entrances and by taking out a full-page add in a local newspaper. This activity turns away customers and induces two deliverymen not to complete deliveries to ACME. Which of the Union's activities violate Section 8 (b)(4)(B)?